Gas-burner.



No. 821,694 PATENTED MAY 29, 1906. L. H. BASQUE.

GAS BURNER.

APPLICATION FILED MAY 2'7. 1905.

2 SHEETS-SHEET 1.

H g l HI D I C c C H HHHHW E5 mu? E i A X wmummm WITNESSES INVENTOR LOUIS H. BACQUE.

PATENTED MAY 29, 1906.

L. BAGQUE. GAS BURNER.

APPLIOATION FILED MAY 2'7. 1905.

2 SHBETSSHEET 2.

INVENTUR LOUIS 1-1. BASQUE.

WITNESSES UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented May 29, 1906.

Application filed May 27,1905- Serial No. 262,601.

To all whom it may concern:

Be it known that I, LoUIs HEoTOR BACQUE, of the city of Three Rivers, Province of Quebec, and Dominion of Canada, have invented certain new and useful Improvements in Gas-Burners, of which the following is a full, clear, and exact description.

My invention relates to gas-burners; and the object is to provide a burner of greatlyincreased heat eiiiciency from burning a given quantity of gas. This object is attained by the accomplishment of three subsidiary objects, which are as follows first, preventing the free access of cold air to the flames of the burner; second, supplying the flame of the burner with a quantity of air that is susceptible of exact regulation and control and which is preheated by the waste heat of the burner itself; third, feeding to the burner a mixture of gas and air that will also be controlled, preheated, and thoroughly mixed prior to combustion.

For better explaining the operation of my device I shall call primary air that which is mixed with the gas in the mixing-chamber prior to combustion and secondary air that which is admitted to the flame of the burner after ignition to complete combustion.

In the drawings which illustrate my invention, Figure 1 is an elevation showing on the left the outer drum andv on the right the inner preheating-drum. Fig. 2 is a vertical section through the center of the burner. Fig. 3 is a plan showin on the left the baseplate and on the right t e mixing-drum. Fig. 4 is a quarter plan View of the griddle. Fig. 5 is a section on the line X X of Fig. 1. Fig.

6 is a plan of the central. heating-drum.

Referring to the parts, A designates a circular base-plate of any suitable material, preferably cast-iron, having at its circumference a raised annular ring A. Surrounding a circular opening in the center of the plate is an annular collar A while a plurality of bosses A are disposed between the collar and the ring A. A shallow space A is left between the bosses A for the passage of the ases. b A hollow stand or foot B is screwed to the lower surface of the base-plate A and has a threaded portion B adapted to be connected to a gas-pipe. Through the threaded portion is a channel B opening into an annular chamber B for the admittance of the primary air and gases. A second opening B in the bottom of the stand B is used to admit part of the secondary air.

A burner-plate E of any suitable material is placed upon the base-plate A in the manner shown in Fig. 2. a central tubular opening 2 connected to the opening B, and which forms the inner circumference of the annular chamber B above referred to. The burner-plate E is so constructed that a plurality of mixing-chambers E and t are formed between the baseplate and the burner-plate. These chambers are connected by the shallow channels A and serve to change the velocity of the gases in passing through them and to thoroughly mix the gases with the primary air. In the upper surface of the burner-plate E, above the outer mixing-chamber E are a number of apertures E, opening into the other suitable material and. serves the pur pose of preventing'the cold air from entering the combustion-chamber. At the top of the drum C are a number of openings 0, which admit secondary air into the annular chamber C between the drums C and D. A circular damper H, with holes corresponding to the openings C, serves to regulate and control the amount of air entering the chamber C The inner drum D has a number of vertical slits D opening into the combustion-chamber and admitting secondary air thereto.

Over the central tubular opening in the burner-plate E is placed a ca F, as shown in Fig. 2. This cap 1s preferab y formed with a conical lug F depending into the opening E and a number of legs F, which serve to support it upon the burner-plate E. The openings between the legs allow the passage of secondary air from the opening E into the combustion-chamber.

A damper J is placed over the opening B to regulate the supply of secondary air entering from this direction.

A griddle G with raised ribs G is placed This burner-plate has over the combustion-chamber to support utensils thereon.

The operation of my device is as follows: Primary air and gas are admitted through the 5 pipe B into the annular chamber B and thence into the first mixing-chamber E Here the velocity is impeded and the gases and air are mixed and heated by contact with the burner-plate E. The gases then pass at a higher velocity through the shallow openings A into the second mixing-chamber E 'and from thence into the combustionchamber through the apertures E. During the passage from the 111st mixing-chamber E the gases are in direct contact with the heating burner-plate E and are not only thoroughly mixed with the primary air, but enter the combustion-chamber at a high degree of temperature, which is the first step toward increasing the efficiency of the burner. When secondary air is admitted into the openings C, it comes in contact with the preheating-drum D, and on entering the combustion-chamber through the apertures D it has 2 5 reached a high degree of temperature. Moreover, the secondary air from this source strikes the combustionchamber at ninety degrees or more to the angle of incidence of the primary gases, which secures the highest pos- 0 sible efliciency of combustion. Another sup ply of secondary air is admitted through the opening B and is also preheated by contact with the burner-plate E and the cap F. The air from this source, which serves to com- 3 5 plete the perfect combustion of gas, also enters the combustion-chamber at an angle of ninety degrees or more to the angle of incidence of the primary gases. The purpose of the artificial fuel, which may be supported on the ribs E is to prevent the escape of the gases until complete combustion has been effected and to arrest and store the heat which would otherwise escape at once. The objects attained, therefore, in my invention are the thorough mixing and preheating of the primary air and gases and final complete combustion with preheated secondary air, as well as the exclusion of an excess of air from the flame.

While I have shown the preferred form of burner as applied to the ordinary gas-stove, it will be readily understood that many variations in form may be made Without departing from the spirit of my invention. I therefore reserve the right to all such modifi- 5 5 cations as fall within the scope of my invention.

Having thus described my invention, so that the same may be readily understood by those skilled in the art to which it apper- 6c tains, what I claim, and desire to secure by Letters Patent, is

In a gas-burner, the combination of a baseplate, a burner-plate mounted thereon, enlarged mixing-chambers connected by shallow channels between the base-plate and the burner-plate, a central air-passage through the base-plate, apertures opening therefrom at right angles to the combustion-chamber, a pair of outer cylindrical drums having an annular space between them, the inner of said drums having apertures opening into the combustion-chamber, and the outer drum having adjustable apertures for admitting air to the annular chamber. 7 5

In witness whereof I have hereunto set my hand in the presence of two witnesses.

LOUIS HECTOR BACQUE.

Witnesses:

RAwsoN C. MYRocK, MARY PAYNE WORMAN. 

